Generally, to set up a signature file, you must have registered a Baidu account for more than 3 months (90 days) before setting it through Baidu. Steps: 1. Enter i Tieba and see "Your Name" 00 2 Click on the right After entering "Your Name", you can see 003 "Basic Information", in 00 "Go to the right" 4 is "Signature File Settings]" and then click "Signature File Settings]" 5. Just add a signature picture and text . 6 There is also a need for review. . . . . .